Question

How to tokenize a string date of format        dd/mm/yyyy into day,month and year without using built in function of strok() or any other built in function in C++ (without classes).
Kindly help Please .

Answer 1

#include <iostream>

using namespace std;

int intValue(string s) {
        int val = 0;

        for(int i=0; i<s.length(); i++) {
                val = val * 10 + (s[i] - '0');
        }

        return val;
}

int main() {

        string s = "21/02/2018";

        // We will be creating the substrings of the string
        // using / character..
        // Substring function takes the start index and the 
        // length of the string to be taken

        int m, y, d;
        d = intValue(s.substr(0, 2));
        m = intValue(s.substr(3, 2));
        y = intValue(s.substr(6, 4));
        
        cout << "Day: " << d << endl;
        cout << "Month: " << m << endl;
        cout << "Year: " << y << endl;

}

**************************************************
Answered without any built in function for tokenization..

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